/*!
 * jQuery blockUI plugin
 * Version 2.41 (03-MAY-2012)
 * @requires jQuery v1.2.3 or later
 *
 * Examples at: http://malsup.com/jquery/block/
 * Copyright (c) 2007-2010 M. Alsup
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Thanks to Amir-Hossein Sobhi for some excellent contributions!
 */

;(function() {

  function setup($) {
    if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) {
      alert('blockUI requires jQuery v1.2.3 or later!  You are using v' + $.fn.jquery);
      return;
    }

    $.fn._fadeIn = $.fn.fadeIn;

    var noOp = function() {};

    // this bit is to ensure we don't call setExpression when we shouldn't (with extra muscle to handle
    // retarded userAgent strings on Vista)
    var mode = document.documentMode || 0;
    var setExpr = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8);
    var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent) && !mode;

    // global $ methods for blocking/unblocking the entire page
    $.blockUI   = function(opts) { install(window, opts); };
    $.unblockUI = function(opts) { remove(window, opts); };

    // convenience method for quick growl-like notifications  (http://www.google.com/search?q=growl)
    $.growlUI = function(title, message, timeout, onClose) {
      var $m = $('<div class="growlUI"></div>');
      if (title) $m.append('<h1>'+title+'</h1>');
      if (message) $m.append('<h2>'+message+'</h2>');
      if (timeout == undefined) timeout = 3000;
      $.blockUI({
        message: $m, fadeIn: 700, fadeOut: 1000, centerY: false,
        timeout: timeout, showOverlay: false,
        onUnblock: onClose,
        css: $.blockUI.defaults.growlCSS
      });
    };

    // plugin method for blocking element content
    $.fn.block = function(opts) {
      return this.unblock({ fadeOut: 0 }).each(function() {
        if ($.css(this,'position') == 'static')
          this.style.position = 'relative';
        if ($.browser.msie)
          this.style.zoom = 1; // force 'hasLayout'
        install(this, opts);
      });
    };

    // plugin method for unblocking element content
    $.fn.unblock = function(opts) {
      return this.each(function() {
        remove(this, opts);
      });
    };

    $.blockUI.version = 2.41; // 2nd generation blocking at no extra cost!

    // override these in your code to change the default behavior and style
    $.blockUI.defaults = {
      // message displayed when blocking (use null for no message)
      message:  '<h1>Please wait...</h1>',

      title: null,    // title string; only used when theme == true
      draggable: true,  // only used when theme == true (requires jquery-ui.js to be loaded)

      theme: false, // set to true to use with jQuery UI themes

      // styles for the message when blocking; if you wish to disable
      // these and use an external stylesheet then do this in your code:
      // $.blockUI.defaults.css = {};
      css: {
        padding:  0,
        margin:   0,
        width:    '30%',
        top:    '40%',
        left:   '35%',
        textAlign:  'center',
        color:    '#000',
        border:   '3px solid #aaa',
        backgroundColor:'#fff',
        cursor:   'wait'
      },

      // minimal style set used when themes are used
      themedCSS: {
        width:  '30%',
        top:  '40%',
        left: '35%'
      },

      // styles for the overlay
      overlayCSS:  {
        backgroundColor: '#000',
        opacity:       0.6,
        cursor:        'wait'
      },

      // styles applied when using $.growlUI
      growlCSS: {
        width:    '350px',
        top:    '10px',
        left:     '',
        right:    '10px',
        border:   'none',
        padding:  '5px',
        opacity:  0.6,
        cursor:   'default',
        color:    '#fff',
        backgroundColor: '#000',
        '-webkit-border-radius': '10px',
        '-moz-border-radius':  '10px',
        'border-radius':     '10px'
      },

      // IE issues: 'about:blank' fails on HTTPS and javascript:false is s-l-o-w
      // (hat tip to Jorge H. N. de Vasconcelos)
      iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',

      // force usage of iframe in non-IE browsers (handy for blocking applets)
      forceIframe: false,

      // z-index for the blocking overlay
      baseZ: 1000,

      // set these to true to have the message automatically centered
      centerX: true, // <-- only effects element blocking (page block controlled via css above)
      centerY: true,

      // allow body element to be stetched in ie6; this makes blocking look better
      // on "short" pages.  disable if you wish to prevent changes to the body height
      allowBodyStretch: true,

      // enable if you want key and mouse events to be disabled for content that is blocked
      bindEvents: true,

      // be default blockUI will supress tab navigation from leaving blocking content
      // (if bindEvents is true)
      constrainTabKey: true,

      // fadeIn time in millis; set to 0 to disable fadeIn on block
      fadeIn:  200,

      // fadeOut time in millis; set to 0 to disable fadeOut on unblock
      fadeOut:  400,

      // time in millis to wait before auto-unblocking; set to 0 to disable auto-unblock
      timeout: 0,

      // disable if you don't want to show the overlay
      showOverlay: true,

      // if true, focus will be placed in the first available input field when
      // page blocking
      focusInput: true,

      // suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity)
      applyPlatformOpacityRules: true,

      // callback method invoked when fadeIn has completed and blocking message is visible
      onBlock: null,

      // callback method invoked when unblocking has completed; the callback is
      // passed the element that has been unblocked (which is the window object for page
      // blocks) and the options that were passed to the unblock call:
      //   onUnblock(element, options)
      onUnblock: null,

      // don't ask; if you really must know: http://groups.google.com/group/jquery-en/browse_thread/thread/36640a8730503595/2f6a79a77a78e493#2f6a79a77a78e493
      quirksmodeOffsetHack: 4,

      // class name of the message block
      blockMsgClass: 'blockMsg'
    };

    // private data and functions follow...

    var pageBlock = null;
    var pageBlockEls = [];

    function install(el, opts) {
      var full = (el == window);
      var msg = opts && opts.message !== undefined ? opts.message : undefined;
      opts = $.extend({}, $.blockUI.defaults, opts || {});
      opts.overlayCSS = $.extend({}, $.blockUI.defaults.overlayCSS, opts.overlayCSS || {});
      var css = $.extend({}, $.blockUI.defaults.css, opts.css || {});
      var themedCSS = $.extend({}, $.blockUI.defaults.themedCSS, opts.themedCSS || {});
      msg = msg === undefined ? opts.message : msg;

      // remove the current block (if there is one)
      if (full && pageBlock)
        remove(window, {fadeOut:0});

      // if an existing element is being used as the blocking content then we capture
      // its current place in the DOM (and current display style) so we can restore
      // it when we unblock
      if (msg && typeof msg != 'string' && (msg.parentNode || msg.jquery)) {
        var node = msg.jquery ? msg[0] : msg;
        var data = {};
        $(el).data('blockUI.history', data);
        data.el = node;
        data.parent = node.parentNode;
        data.display = node.style.display;
        data.position = node.style.position;
        if (data.parent)
          data.parent.removeChild(node);
      }

      $(el).data('blockUI.onUnblock', opts.onUnblock);
      var z = opts.baseZ;

      // blockUI uses 3 layers for blocking, for simplicity they are all used on every platform;
      // layer1 is the iframe layer which is used to supress bleed through of underlying content
      // layer2 is the overlay layer which has opacity and a wait cursor (by default)
      // layer3 is the message content that is displayed while blocking

      var lyr1 = ($.browser.msie || opts.forceIframe)
        ? $('<iframe class="blockUI" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;position:absolute;width:100%;height:100%;top:0;left:0" src="'+opts.iframeSrc+'"></iframe>')
        : $('<div class="blockUI" style="display:none"></div>');

      var lyr2 = opts.theme
        ? $('<div class="blockUI blockOverlay ui-widget-overlay" style="z-index:'+ (z++) +';display:none"></div>')
        : $('<div class="blockUI blockOverlay" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;width:100%;height:100%;top:0;left:0"></div>');

      var lyr3, s;
      if (opts.theme && full) {
        s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage ui-dialog ui-widget ui-corner-all" style="z-index:'+(z+10)+';display:none;position:fixed">' +
            '<div class="ui-widget-header ui-dialog-titlebar ui-corner-all blockTitle">'+(opts.title || '&nbsp;')+'</div>' +
            '<div class="ui-widget-content ui-dialog-content"></div>' +
          '</div>';
      }
      else if (opts.theme) {
        s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement ui-dialog ui-widget ui-corner-all" style="z-index:'+(z+10)+';display:none;position:absolute">' +
            '<div class="ui-widget-header ui-dialog-titlebar ui-corner-all blockTitle">'+(opts.title || '&nbsp;')+'</div>' +
            '<div class="ui-widget-content ui-dialog-content"></div>' +
          '</div>';
      }
      else if (full) {
        s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage" style="z-index:'+(z+10)+';display:none;position:fixed"></div>';
      }
      else {
        s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement" style="z-index:'+(z+10)+';display:none;position:absolute"></div>';
      }
      lyr3 = $(s);

      // if we have a message, style it
      if (msg) {
        if (opts.theme) {
          lyr3.css(themedCSS);
          lyr3.addClass('ui-widget-content');
        }
        else
          lyr3.css(css);
      }

      // style the overlay
      if (!opts.theme && (!opts.applyPlatformOpacityRules || !($.browser.mozilla && /Linux/.test(navigator.platform))))
        lyr2.css(opts.overlayCSS);
      lyr2.css('position', full ? 'fixed' : 'absolute');

      // make iframe layer transparent in IE
      if ($.browser.msie || opts.forceIframe)
        lyr1.css('opacity',0.0);

      //$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el);
      var layers = [lyr1,lyr2,lyr3], $par = full ? $('body') : $(el);
      $.each(layers, function() {
        this.appendTo($par);
      });

      if (opts.theme && opts.draggable && $.fn.draggable) {
        lyr3.draggable({
          handle: '.ui-dialog-titlebar',
          cancel: 'li'
        });
      }

      // ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling)
      var expr = setExpr && (!$.boxModel || $('object,embed', full ? null : el).length > 0);
      if (ie6 || expr) {
        // give body 100% height
        if (full && opts.allowBodyStretch && $.boxModel)
          $('html,body').css('height','100%');

        // fix ie6 issue when blocked element has a border width
        if ((ie6 || !$.boxModel) && !full) {
          var t = sz(el,'borderTopWidth'), l = sz(el,'borderLeftWidth');
          var fixT = t ? '(0 - '+t+')' : 0;
          var fixL = l ? '(0 - '+l+')' : 0;
        }

        // simulate fixed position
        $.each([lyr1,lyr2,lyr3], function(i,o) {
          var s = o[0].style;
          s.position = 'absolute';
          if (i < 2) {
            full ? s.setExpression('height','Math.max(document.body.scrollHeight, document.body.offsetHeight) - (jQuery.boxModel?0:'+opts.quirksmodeOffsetHack+') + "px"')
               : s.setExpression('height','this.parentNode.offsetHeight + "px"');
            full ? s.setExpression('width','jQuery.boxModel && document.documentElement.clientWidth || document.body.clientWidth + "px"')
               : s.setExpression('width','this.parentNode.offsetWidth + "px"');
            if (fixL) s.setExpression('left', fixL);
            if (fixT) s.setExpression('top', fixT);
          }
          else if (opts.centerY) {
            if (full) s.setExpression('top','(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (blah = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"');
            s.marginTop = 0;
          }
          else if (!opts.centerY && full) {
            var top = (opts.css && opts.css.top) ? parseInt(opts.css.top) : 0;
            var expression = '((document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + '+top+') + "px"';
            s.setExpression('top',expression);
          }
        });
      }

      // show the message
      if (msg) {
        if (opts.theme)
          lyr3.find('.ui-widget-content').append(msg);
        else
          lyr3.append(msg);
        if (msg.jquery || msg.nodeType)
          $(msg).show();
      }

      if (($.browser.msie || opts.forceIframe) && opts.showOverlay)
        lyr1.show(); // opacity is zero
      if (opts.fadeIn) {
        var cb = opts.onBlock ? opts.onBlock : noOp;
        var cb1 = (opts.showOverlay && !msg) ? cb : noOp;
        var cb2 = msg ? cb : noOp;
        if (opts.showOverlay)
          lyr2._fadeIn(opts.fadeIn, cb1);
        if (msg)
          lyr3._fadeIn(opts.fadeIn, cb2);
      }
      else {
        if (opts.showOverlay)
          lyr2.show();
        if (msg)
          lyr3.show();
        if (opts.onBlock)
          opts.onBlock();
      }

      // bind key and mouse events
      bind(1, el, opts);

      if (full) {
        pageBlock = lyr3[0];
        pageBlockEls = $(':input:enabled:visible',pageBlock);
        if (opts.focusInput)
          setTimeout(focus, 20);
      }
      else
        center(lyr3[0], opts.centerX, opts.centerY);

      if (opts.timeout) {
        // auto-unblock
        var to = setTimeout(function() {
          full ? $.unblockUI(opts) : $(el).unblock(opts);
        }, opts.timeout);
        $(el).data('blockUI.timeout', to);
      }
    };

    // remove the block
    function remove(el, opts) {
      var full = (el == window);
      var $el = $(el);
      var data = $el.data('blockUI.history');
      var to = $el.data('blockUI.timeout');
      if (to) {
        clearTimeout(to);
        $el.removeData('blockUI.timeout');
      }
      opts = $.extend({}, $.blockUI.defaults, opts || {});
      bind(0, el, opts); // unbind events

      if (opts.onUnblock === null) {
        opts.onUnblock = $el.data('blockUI.onUnblock');
        $el.removeData('blockUI.onUnblock');
      }

      var els;
      if (full) // crazy selector to handle odd field errors in ie6/7
        els = $('body').children().filter('.blockUI').add('body > .blockUI');
      else
        els = $('.blockUI', el);

      if (full)
        pageBlock = pageBlockEls = null;

      if (opts.fadeOut) {
        els.fadeOut(opts.fadeOut);
        setTimeout(function() { reset(els,data,opts,el); }, opts.fadeOut);
      }
      else
        reset(els, data, opts, el);
    };

    // move blocking element back into the DOM where it started
    function reset(els,data,opts,el) {
      els.each(function(i,o) {
        // remove via DOM calls so we don't lose event handlers
        if (this.parentNode)
          this.parentNode.removeChild(this);
      });

      if (data && data.el) {
        data.el.style.display = data.display;
        data.el.style.position = data.position;
        if (data.parent)
          data.parent.appendChild(data.el);
        $(el).removeData('blockUI.history');
      }

      if (typeof opts.onUnblock == 'function')
        opts.onUnblock(el,opts);
    };

    // bind/unbind the handler
    function bind(b, el, opts) {
      var full = el == window, $el = $(el);

      // don't bother unbinding if there is nothing to unbind
      if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked')))
        return;
      if (!full)
        $el.data('blockUI.isBlocked', b);

      // don't bind events when overlay is not in use or if bindEvents is false
      if (!opts.bindEvents || (b && !opts.showOverlay))
        return;

      // bind anchors and inputs for mouse and key events
      var events = 'mousedown mouseup keydown keypress';
      b ? $(document).bind(events, opts, handler) : $(document).unbind(events, handler);

    // former impl...
    //     var $e = $('a,:input');
    //     b ? $e.bind(events, opts, handler) : $e.unbind(events, handler);
    };

    // event handler to suppress keyboard/mouse events when blocking
    function handler(e) {
      // allow tab navigation (conditionally)
      if (e.keyCode && e.keyCode == 9) {
        if (pageBlock && e.data.constrainTabKey) {
          var els = pageBlockEls;
          var fwd = !e.shiftKey && e.target === els[els.length-1];
          var back = e.shiftKey && e.target === els[0];
          if (fwd || back) {
            setTimeout(function(){focus(back)},10);
            return false;
          }
        }
      }
      var opts = e.data;
      // allow events within the message content
      if ($(e.target).parents('div.' + opts.blockMsgClass).length > 0)
        return true;

      // allow events for content that is not being blocked
      return $(e.target).parents().children().filter('div.blockUI').length == 0;
    };

    function focus(back) {
      if (!pageBlockEls)
        return;
      var e = pageBlockEls[back===true ? pageBlockEls.length-1 : 0];
      if (e)
        e.focus();
    };

    function center(el, x, y) {
      var p = el.parentNode, s = el.style;
      var l = ((p.offsetWidth - el.offsetWidth)/2) - sz(p,'borderLeftWidth');
      var t = ((p.offsetHeight - el.offsetHeight)/2) - sz(p,'borderTopWidth');
      if (x) s.left = l > 0 ? (l+'px') : '0';
      if (y) s.top  = t > 0 ? (t+'px') : '0';
    };

    function sz(el, p) {
      return parseInt($.css(el,p))||0;
    };

  };


  if (typeof define === 'function' && define.amd && define.amd.jQuery) {
    define(['jquery'], setup);
  } else {
    setup(jQuery);
  }

})();